Justin hills



(No Model.)

J. HILLS 8v F. FITCH.

ROTARY ENGINE. No. 364,925. Patented June 14, 1887.

WI TJV' ESSES of, @MM

Unirse *rares arent tries,

JUSTIN HILLS, OF ISOIIUA, AND FRANKLIN FITCH, OF FRANKLINVILLE, NEVYORK.

ROTARY ENGINE.

SPECIFICATION forming part of Letters Patent No. 364,925, dated June 14,1887.

(No model.)

To @ZZ whom, may concern:

Be it known that we, JUSTIN HILLS, of Isehua, in the county ofCattaraugus and State of New York, and FRANKLIN Frren, of Franklinville,in the county of Oattaraugus and State of New York, have inventedcertain new and useful Improvements in Rotary Engines, and we do herebydeclare that the following is a full, clear, and exact description oftheinvention, which will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, which form a part oi' this specification, and inwhich- Figure 1 is a perspective view of our improved rotary engine,showing one ofthe heads removed, so as to illustrate the relativelocation of the cireulargroove in the inner side of the packing-plateot' the head and the sliding ring-segment in thel groove and the piston.Fig. 2 is a transverse sectional view of the engine, and Fig. 3 is anaxial sectional view ot' the engine, showing the piston in side view.

Similar numerals of reference indicate corresponding parts in all thefigures.

Our invention-has relation to that class of rotary steanrengines inwhich the steam enters the cylinder' through the heads,and is carriedback of hinged wings upon the pistons by means of grooves at the ends ofthe engine; and it consists in the improved construction and combinationof paris of such an engine in which the said circular grooves are formedin the inner sides of circular packing-plates secured inside of theheads of the cylinder and bearing against the heads or ends ofthecylindrical piston, contemplating certain improvements upon the enginefor which Letters Patent No. 347,242 were granted to Justin Hills ou the10th day of August, 1886, as hereinafter more fully described andclaimed.

In the accompanying drawings,the numeral 1 indicates the cylinder of theengine, which cylinder is provided with two heads, 2, suitably securedto the ends of the cylinder and formed with eccentric bearings andstallingboxes 3, registering with each other.

The shaft f1 of the cylindrical piston 5 is journaled in these bearings,and the cylindrical surface of the piston bears against the upper sideof the cylinder, at which point the cylinder is formed with alongitudinal recess, G, in its inner side, having a packing block orstrip, 7, placed within it and bearing firmly and tightly against thesurface of the piston, and having springs S, or set-screws, for foreingit against the piston.

The cylindrical surface ofthe piston is formed with twodiametrically-opposite longitudinal and shallow recesses, 9, and twocurved wings, 10, are hinged with one edge in the recesses, and bearwith their free edges and outer convex sides against the inner side ofthe cylinder-headed rods 11, sliding in radiating bores 12 in thepiston,and having springs 13, forcing them against the inner sides ofthewings,forc ing the wings outward.

The innner concave sides of the wings have guide-plates 14, hinged tothem near the free edges, and these guide-plates slide in longitudinalgrooves or recesses 15 in the sides of the piston, the said guideplatesbeing either straight, as shown in the drawings, or curved, sliding incorrespondingly-shaped grooves or recesses.

The ends of the recesses or grooves for the guide-plates are cut off, toform beveled port-s or channels 16, opening in the heads or ends of thepiston and to the rear of the guideplates.

The heads of the cylinder have packingplates 17, secured against theirinner sides, bearing with their inner faces against the ends of thecylinder, and these packing-plates are formed with annular grooves 18,concentric with the piston-shaft and registering with the inner ends ofthe beveled doors in the cylinder, and a segmental ring, 19, lits ineach of the channels orgrooves and slides in the same, filling somewhatless than one-half oi' each groove.

The livesteam ports 20 are formed in these annular grooves or channelsat the same side of the piston-shaft, and the live-steam pipes 2l. enterthese ports, passing into the cylinder through the heads.

The exhaust-port 22 is in the side of the cylinder opposite to the sideat which the livesteamvports are, and the exhaust-pipe 23 is secured tothe said port.

IOO

It will now be seen that when the live steam enters through the portsinto the annular grooves or channels the said channels will carry thesteam so that it will pass through one of the beveled ports at each endof the piston, and through these beveled ports the steam will be carriedback of one of t-he wings of the piston, forcing the same forward by itsexpansion, and by the steamv being fed to the beveled port, While theouter end of the said port registers with the open portion of thechannel. When, now, the outer end of the port arrives at the end of thesegmental ring or bar, the latter will cut off the supply of steam intothe port, and when the free edge of the Wing passes the exhaust-port thesteam will be exhausted through the said port, live steam being in themeantime fed to the opposite Wing through the ports at that side. Inthis manner the piston Will be revolved, and the, period of therevolution at which the steam shall be admitted to the beveled ports,and at which it shall be again shut off from them, can be determined andfixed by adjusting the segmental rings or bars in the annular channels,the said rings or bars serving as cutoi's for the steam, suitablescrews, bolts, or similar means being carried. out through apertures inthe heads from the rings or bars for .adjusting and moving them.

Theguideplates Willprevent the steam from being caught under thewings,where it would -be liable to obstruct the free closing of theWings into their recesses,and the packing block or strip bearing againstthe piston at the upper side of the cylinder will prevent any of thelive steam from entering the exhausty side of the cylinder by passingover the piston', and thus stopping or obstructing the -revolutions ofthe piston. Y Y

Having thus described our invention, we claim and desire to secure byLetters Patent of the United States- 1. In arotary steam-engine, thecombination of a cylindrical piston having curved Wings hinged withtheir inner edges to the surface of the same, and having beveled portsin the ends to the rear of the hinged edges of the Wings, with acylinder having circular packing-plates at its heads, and having thepiston journaled eccentrically in it, and having an annular groove orchannel in each packing-plate concentric With'the piston and-registering with the outer ends of the .beveled ports, andsegmental'cut-ff rings or bars sliding adj ustably in the grooves orchannels', as and for the purpose shown and set forth.

2. In arotary steam-engine, the combination of a cylinder havingeccentric registering-bearings in its. heads, and having the live-steamports in the heads to one side of the bearings,

and having the exhaust-port in the opposite sidc of the cylinder, acylindrical piston `journaled with its shaft in the bearings, and havingcurvedV Wings hinged with their inner edges in shallowr recesses in thesurface of the piston, and provided with springs for forcing themoutward, -and having inclined or beveled ports passing from the ends ofthe piston to the back of the Wings, and packing-plates secured bctWeenthe heads of the cylinder and the endsl of the piston, and havingannular grooves or channels in their inner sides registering with thebeveled ports, and provided with adj ustable segmental cut-off rings orbars sliding adj ustably in the channels, as and for the purpose shownand set forth.

'3. In a rotary steam-engine having the livesteam ports at one side andthe exhaust at the A to the inner sides of the Wings, near the outeredges of the same, and sliding in correspondingly-shaped grooves orrecesses in the piston, as and for the purpose shown and set forth.

In testimony that We claim the foregoing as our own we have hereuntoaffixed our signatures in presence of two Witnesses.

JUSTIN HILLS. FRANKLIN FITCH.

Witnesses:

GEORGE E. SPRING, GnARLns l?. HALLIGAN.

